Phylum: Basidiomycota	Class: Agaricomycetes
Order: Russulales	Family: Bondarzewiaceae
Species: Heterobasidion annosum (Fr.) Bref.

Synonyms:

Boletus cryptarum Cunninghamella meineckella Fomes annosus Fomes cryptarum Fomitopsis annosa Golosged y Gwraidd Polyporus annosus Polyporus cryptarum Polyporus scoticus Polyporus scoticus f. subterranea Polyporus subpileatus Polystictus cryptarum Poria cryptarum Spiniger meineckellus

Common Name:

Root Rot

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This distribution map was produced using DMap

On conifer roots

Photographer: © Aideen O'Doherty

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View this species in its UK context on the NBN Atlas

Associated Species (where recorded) & number of records: Picea sitchensis (11) Picea abies (6) Pinus sylvestris (5) Fagus sylvatica (4) Pinus (4) Quercus (2) Picea (2) Larix (2) Fraxinus excelsior (1) Coniferophyta (1) Betula (1) Quercus petraea (1) Larix decidua (1)

Habitat (where recorded) & number of records: Woodland and scrub (6) Woodland: coniferous, plantation (6) Woodland: mixed (6) Woodland (4) Woodland: mixed, plantation, high forest (4) Parkland and scattered trees (3) Woodland: mixed, semi-natural (3) Neutral grassland: semi-improved (2) Parkland and scattered trees: mixed (2) Woodland: mixed, plantation (2) Bog: raised (1) Built up area, domestic (1) Woodland: broadleaved (1) Woodland: broadleaved, plantation (1) Woodland: broadleaved, semi-natural (1)

Substrate (where recorded) & number of records: Stump (18) Tree (12) Fallen Tree (4) Soil (4) Wood (4) Branch (2) Log (2) Root (2) Soil Needle (2) Standing Dead Tree (1) Trunk, live (1)

Months recorded in & number of records: January (13) February (2) March (1) April (2) May (2) June (3) July (3) August (15) September (20) October (22) November (6) December (2)